Cannot Connect via Bluetooth
BBC Micro:bit
Severity: ModerateWhat Does This Error Mean?
Bluetooth connection issues with the Micro:bit are common. The Micro:bit must be in pairing mode, and older pairings may need to be removed from your phone. Hold A+B+Reset simultaneously to enter pairing mode.
Affected Models
- BBC Micro:bit V1
- BBC Micro:bit V2
Common Causes
- Micro:bit not in pairing mode
- Old pairing data on the phone — needs forgetting
- Bluetooth not enabled on the phone
- Program on the Micro:bit does not include Bluetooth service
- Phone too far from the Micro:bit
How to Fix It
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Put the Micro:bit in pairing mode.
Hold buttons A + B together, then press and release the Reset button (while still holding A+B). The LED display should show a pairing pattern.
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Remove old Micro:bit pairings from your phone.
On your phone: Settings > Bluetooth > find the Micro:bit > Forget This Device. Then try pairing again.
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Make sure the program includes Bluetooth.
In MakeCode: add the Bluetooth extension from Extensions menu. Without the Bluetooth extension, the Micro:bit does not advertise Bluetooth.
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Keep the phone within 1 meter during pairing.
During initial pairing, keep devices very close. After pairing, the range extends to about 10 meters.
Frequently Asked Questions
Which app do I use to connect?
Use the official micro:bit app (available for iOS and Android). Some features also work with the MakeCode app.
Does Bluetooth work with MakeCode programs?
Yes, but you must add the Bluetooth extension. Note: Bluetooth and Radio extensions cannot be used together — they share the same hardware.